Boswell在《约翰逊传》里说，放养的动物，比圈养的动物肉味鲜美。这个道理，也适用于对比随性读闲书的人和读经院书籍的人。

“The flesh of animals who feed excursively, is allowed to have a higher flavour than that of those who are cooped up. May there not be the same difference between men who read as their taste prompts,and men who are confined in cells and colleges to stated tasks?”

我读了这句话，很受用。搞科研我不行，但论上课，我这头吃野食的猪，肉煮熟了，学生嚼起来，也许比学院猪们更有滋味。